Geology and mineral wealth of the California Transverse Ranges Santa Anna, Calif.: South Coast Geological Society, 1982. Includes: Probert, Alan. Mining history, Santa Catalina Island, Los Angeles County, California pp.485-493.

Geology and mineral wealth of the California Transverse Ranges Santa Anna, Calif.: South Coast Geological Society, 1982. Includes: Probert, Alan. Mining history, Santa Catalina Island, Los Angeles County, California pp.485-493. , Box: 33. Alan & Lillie M. Probert Collection, 33036851. Benson Latin American Collection, The University of Texas at Austin. https://archives.lib.utexas.edu/repositories/4/archival_objects/279594 Accessed September 27, 2026.